Do you know what could be the reason it doesn't rain much in my city like it did 10 year ago?

I remember when we first came to Bangalore back in 2008, the weather was amazing. In 2009-2010 summer vacations whenever we went to our hometown in Bengal and stay there in April and May, my dad used to be in Bangalore as he had Office work and he used to say that in May it used to rain almost daily in Bangalore and weather used to be so comfortable but now in May 2021 its not at all raining. Why is it so?